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command_test.go
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command_test.go
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package main
import (
"bytes"
"errors"
"io"
"io/ioutil"
"net/url"
"regexp"
"strings"
"testing"
"github.com/bradleyjkemp/cupaloy"
"github.com/stretchr/testify/assert"
)
func newTestCommand(h func(*url.URL) (*fakeHTTPResponse, error)) *command {
return newTestCommandWithStdout(ioutil.Discard, h)
}
func newTestCommandWithStdout(stdout io.Writer, h func(*url.URL) (*fakeHTTPResponse, error)) *command {
return newCommand(
stdout,
ioutil.Discard,
false,
newFakeHTTPClientFactory(h),
)
}
func newTestCommandWithStderr(stderr io.Writer, h func(*url.URL) (*fakeHTTPResponse, error)) *command {
return newCommand(
ioutil.Discard,
stderr,
false,
newFakeHTTPClientFactory(h),
)
}
func TestCommandRun(t *testing.T) {
ok := newTestCommand(
func(u *url.URL) (*fakeHTTPResponse, error) {
s := "http://foo.com"
if u.String() != s {
return nil, errors.New("")
}
return newFakeHTTPResponse(200, s, "text/html", nil), nil
},
).Run([]string{"http://foo.com"})
assert.True(t, ok)
}
func TestCommandRunWithLinks(t *testing.T) {
visited := false
ok := newTestCommand(
func(u *url.URL) (*fakeHTTPResponse, error) {
switch u.String() {
case "http://foo.com":
return newFakeHTTPResponse(
200,
"http://foo.com",
"text/html",
[]byte(`<html><body><a href="/foo" /></body></html>`),
), nil
case "http://foo.com/foo":
visited = true
return newFakeHTTPResponse(200, "http://foo.com", "text/html", nil), nil
}
return nil, errors.New("")
},
).Run([]string{"http://foo.com"})
assert.True(t, ok)
assert.True(t, visited)
}
func TestCommandRunWithVerboseOption(t *testing.T) {
b := &bytes.Buffer{}
ok := newTestCommandWithStdout(
b,
func(u *url.URL) (*fakeHTTPResponse, error) {
return newFakeHTTPResponse(200, "http://foo.com", "text/html", nil), nil
},
).Run([]string{"-v", "http://foo.com"})
assert.True(t, ok)
assert.Greater(t, b.Len(), 0)
}
func TestCommandFailToRun(t *testing.T) {
ok := newTestCommand(
func(u *url.URL) (*fakeHTTPResponse, error) {
return nil, errors.New("")
},
).Run([]string{"http://foo.com"})
assert.False(t, ok)
}
func TestCommandFailToRunWithInvalidLink(t *testing.T) {
b := &bytes.Buffer{}
ok := newTestCommandWithStdout(
b,
func(u *url.URL) (*fakeHTTPResponse, error) {
if u.String() == "http://foo.com" {
return newFakeHTTPResponse(
200,
"http://foo.com",
"text/html",
[]byte(`<html><body><a href="/foo" /></body></html>`),
), nil
}
return nil, errors.New("")
},
).Run([]string{"http://foo.com"})
assert.False(t, ok)
assert.Regexp(t, `http://foo\.com/foo`, b.String())
}
func TestCommandFailToParseArguments(t *testing.T) {
b := &bytes.Buffer{}
c := newTestCommandWithStderr(
b,
func(u *url.URL) (*fakeHTTPResponse, error) {
return newFakeHTTPResponse(200, "", "text/html", nil), nil
},
)
ok := c.Run(nil)
assert.False(t, ok)
assert.Greater(t, b.Len(), 0)
}
func TestCommandFailToFetchRootPage(t *testing.T) {
b := &bytes.Buffer{}
ok := newTestCommandWithStderr(
b,
func(u *url.URL) (*fakeHTTPResponse, error) {
return nil, errors.New("foo")
},
).Run([]string{"http://foo.com"})
assert.False(t, ok)
cupaloy.SnapshotT(t, b.String())
}
func TestCommandFailToGetHTMLRootPage(t *testing.T) {
b := &bytes.Buffer{}
ok := newTestCommandWithStderr(
b,
func(u *url.URL) (*fakeHTTPResponse, error) {
return newFakeHTTPResponse(200, "", "image/png", nil), nil
},
).Run([]string{"http://foo.com"})
assert.False(t, ok)
cupaloy.SnapshotT(t, b.String())
}
func TestCommandColorErrorMessage(t *testing.T) {
b := &bytes.Buffer{}
c := newCommand(
ioutil.Discard,
b,
true,
newFakeHTTPClientFactory(func(u *url.URL) (*fakeHTTPResponse, error) {
return nil, errors.New("foo")
}),
)
ok := c.Run([]string{"http://foo.com"})
assert.False(t, ok)
cupaloy.SnapshotT(t, b.String())
}
func TestCommandShowHelp(t *testing.T) {
b := &bytes.Buffer{}
c := newTestCommandWithStdout(
b,
func(u *url.URL) (*fakeHTTPResponse, error) {
return newFakeHTTPResponse(200, "", "text/html", nil), nil
},
)
ok := c.Run([]string{"--help"})
assert.True(t, ok)
assert.Greater(t, b.Len(), 0)
}
func TestCommandShowVersion(t *testing.T) {
b := &bytes.Buffer{}
c := newTestCommandWithStdout(
b,
func(u *url.URL) (*fakeHTTPResponse, error) {
return newFakeHTTPResponse(200, "", "text/html", nil), nil
},
)
ok := c.Run([]string{"--version"})
assert.True(t, ok)
r, err := regexp.Compile(`^[0-9]+\.[0-9]+\.[0-9]+$`)
assert.Nil(t, err)
assert.True(t, r.MatchString(strings.TrimSpace(b.String())))
}
func TestCommandFailToRunWithJSONOutput(t *testing.T) {
b := &bytes.Buffer{}
ok := newTestCommandWithStdout(
b,
func(u *url.URL) (*fakeHTTPResponse, error) {
if u.String() == "http://foo.com" {
return newFakeHTTPResponse(
200,
"http://foo.com",
"text/html",
[]byte(`<html><body><a href="/foo" /></body></html>`),
), nil
}
return nil, errors.New("foo")
},
).Run([]string{"--json", "http://foo.com"})
assert.False(t, ok)
assert.Greater(t, b.Len(), 0)
}
func TestCommandDoNotIncludeSuccessfulPageInJSONOutput(t *testing.T) {
b := &bytes.Buffer{}
ok := newTestCommandWithStdout(
b,
func(u *url.URL) (*fakeHTTPResponse, error) {
return newFakeHTTPResponse(200, "", "text/html", nil), nil
},
).Run([]string{"--json", "http://foo.com"})
assert.True(t, ok)
assert.Equal(t, strings.TrimSpace(b.String()), "[]")
}